Defensive publication

ABSTRACT

STABLE PHOTOGRAPHIC IMAGES ARE FORMED BY A DRY PRINTOUT PROCESS WHICH EMPLOYS A PHOTOGRAPHIC ELEMENT COMPRISING A LIGHT SENSITIVE COMPOUND, E.G. AN AROMATIC AZIDE, AND A DYE FORMING COUPLER, PREFERABLY A PHENOLIC COMPOUND OF THE TYPE WHICH WILL FORM AN AZOMETHINE DYE. THE AZIDE AND THE COUPLER ARE PREFERABLY COATED ON A SUPPORT SUCH AS PAPER AND ISOLATED FROM EACH OTHER. THE ELEMENT IS EXPOSED IMAGE-WISE TO VISIBLE LIGHT AT AMBIENT TEMPERATURE WHEREBY THE PHOTOSENSITIVE COMPONENT DECOMPOSES TO A COLORED PHOTOPRODUCT IN THE LIGHT STRUCK AREAS. THE ELEMENT IS THEN HEATED TO PERMIT INTIMATE PHYSICAL MIXING OR COSOLUTION OF THE LIGHT SENSITIVE AND COUPLER COMPONENTS AND THEN FLASH EXPOSED AT A DIFFERENT TEMPERATURE TO YIELD STABLE PRINTOUT IMAGES DIRECTLY WITHOUT ADDITIONAL PROCESSING OR FIXING STEPS. THE SYSTEM MAY BE MADE EITHER POSITIVE OR NEGATIVE WORKING BY REVERSING THE TEMPERATURES AT WHICH THE EXPOSURES ARE MADE. SUITABLE AZIDES INCLUDE 3-METHYL-4-AZIDO-N-ETHYL-NDODECYLANILINE AND N-(4-AZIDOPHENYL) MORPHOLINE; AND SUITABLE COUPLERS INCLUDE 2,4-DICHLORO - 3 METHYL-6-STEARAMIDOPHENOL AND 2-(A-(2,4-DI - TERT - AMYLPHENOXY) ACETAMIDO)-4.6-DICHLORO-5-METHYLPHENOL. THE AZIDE AND THE COUPLER ARE PREFERABLY COATED IN SEPARATE LAYERS ON THE SUPPORT AND ARE NON-MIGRATING AT NORMAL TEMPERATURE BUT WHEN HEATED THEY MIX AND UPON LIGHT EXPOSURE FORM A DYE.

EFENSW PUBLTCATIQN UNITED STATES PATENT OFFICE Published at the requestof the applicant or owner in accordance with the Notice of Dec. 16,1969, 869 O.G. 687. The abstracts of Defensive Publication applicationsare identified by distinctly numbered series and are arrangedchronologically. The heading of each abstract indicates the number ofpages of specification, including claims and sheets of drawingscontained in the application as originally filed. The files of theseapplications are available to the public for inspection and reproductionmay be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to themerits of alleged invention. The Patent Ofiice makes no assertion as tothe novelty of the disclosed subject matter.

PUBLISHED AUGUST 31, 1971 T889,006 DRY PRllNTOlUT SYSTEM FOR PAPERWilliam J. Priest, Kodak Park Works, 1669 Lake Ave, Rochester, N.Y.14615 Filed Apr. 30, 1970, Ser. No. 33,503 Int. Cl. G3c 1/58, 5/22, 5/34US. Cl. 96-49 No Drawing. 17 Pages Specification Stable photographicimages are formed by a dry printout process which employs a photographicelement comprising a light sensitive compound, e.g. an aromatic azide,and a dye forming coupler, preferably a phenolic compound of the typewhich will form an azomethine dye. The azide and the coupler arepreferably coated on a support such as paper and isolated from eachother. The element is exposed image wise to visible light at ambienttemperature whereby the photosensitive component decomposes to a coloredphotoproduct in the light struck areas. The element is then heated topermit intimate physical mixing or cosolution of the light sensitive andcoupler components and then flash exposed at a different temperature toyield stable printout images directly without additional processing orfixing steps. The system may be made either positive or negative Workingby reversing the temperatures at which the exposures are made.

Suitable azides include 3-niethyl-4-azido-N-ethyl-N- dodecylaniline andN-(4-azidophenyl) morpholine; and suitable couplers include 2,4-dichloro3 methyl-6-stearamidophenol and 2-[a-(2,4-di tertamylphenoxy)acetamido]-4,6-dichloro-5-rncthylphenol. The azide and the coupler arepreferably coated in separate layers on the support and arenon-migrating at normal temperature but when heated they mix and uponlight exposure form a dye.

